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22. Does the hepatitis B virus develop resistance to the anti-viral treatments?

Here are some of the comparisons of the resistance. This looks at one year of therapy with the two oral agents, the yellow is adefovir and the green is lamivudine, and resistance was zero, and 24%, 2%- 42%, 3.9%-53% and then 70%. So you can see, resistance is really one of the key issues of difference between the two drugs.